My doctor detected a bruit in my neck.  What is it, and should I be concerned?
D001314:Auscultation; D016893:Carotid Stenosis / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D012307:Risk Factors; D020521:Stroke / Q000209:etiology; D018616:Ultrasonography, Doppler, Duplex